Riding snow ski



FIG. 1 is a front perspective view of a riding snow ski showing my new design;

FIG. 2 is a side elevational view thereof, the side opposite being substantially a mirror image;

FIG. 3 is a front elevational view thereof shown on an enlarged scale with portions of the vertical frame broken away for ease of illustration; and

FIG. 4 is a top plan view thereof with the ski member shown in fragment. 

The ornamental design for a riding snow ski, as shown and described. 